experience with Spencerworks?

We have had quite a bit of experience and find the product to be as advertised. It is, in our opinion, the best answer yet to combination storm windows on heritage houses.

If you don't live in Nebraska (sorry about your bad luck), you are at the mercy of the accuracy of your own measurements. Spencer will make the windows to the measurements you provide. If you are not sure of your measuring ability -- hire a professional carpenter or window guy to measure for you. You will probably want a pro to install the windows, so make him responsible for accurate measurements in the first place. It's his headache if they're wrong.

If you are going to do it yourself, measure twice on two separate days. Compare the measurements and remeasure any dimension more than 1/16th inch different. The web site for the company contains comprehensive measurement instructions, so it's hard to go wrong. But don't forget that few windows are absolutely square, so be sure to measure in at least three places and use the smallest measurement. If your window is more than 1/4" out of square over 3', you'd best have someone look at your foundation. There's something wrong. Houses should not settle that much.

As to service after the sale, if the problem is their error, you can expect prompt and cheerful replacement. If it is your error, expect to pay for a new window.